question_answer

Three point charges 1C, 2C and 3C are placed at the corners of an equilateral triangle of side 1m. The work done in bringing these charges to the vertices of a smaller similar triangle of side 0.5 m is:

A)  \[2.7\times {{10}^{10}}J\]           

B)         \[9.9\times {{10}^{10}}J\]           

C)         \[10.8\times {{10}^{10}}J\]        

D)         \[5.4\times {{10}^{10}}J\]

E)  zero